chopper fork length calculator

twisted choppers wide springer front end ***built to order per your measurements-no returns accepted*** all components are cnc machined for accuracy, quality and appearance. This is a must-see. The first to be discussed will be fork length, followed by rake and then trail. Lengthening the fork would have the opposite effect on the rake of a motorcycle, since rake is measured in the opposite direction. If you only have the frame, measure from center of top of steering neck perpendicular to the ground and add 1" to this measurement. web app: Calculate frame geometry of an existing bike through simple XY measurements. 25mm, 171.45mm long. start with this calculator rb racing fork length and trail calculator then mockup frame+ wheel and , ideally if you already have the tree. $1,240. Stiffer than CBR929RR. HTTMT Integrated Internal Fork Stops Kit For 1936-2019 Harley Models & Chopper Wide Glide Springer Neck Cups [P/N: NCK001] 4.3 out of 5 stars 23 $53.89 - $151.29 28" Inline Spring Fork Assembly Chrome for Harley Panhead Knucklehead Chopper —. Regular price. Article By: Twisted Choppers – twistedchoppers.com. all components are cnc machined for accuracy, quality and appearance. FORK LENGTH: The distance between the top of the fork tubes to the centerline of the axle. Figuring Out Fork Length For A Custom Long Bike. Tim Fiorucci of Fiorucci Fabrications built this 1973 Harley Ironhead Sportster Chopper, which has a single disc 35mm Kayaba front fork on it, as the stock bike would have.. 39mm Narrow Glide forks are produced by Showa (who also supplied the earlier 35mm forks found on earlier models) and were supplied on Harley-Davidson Sportsters, and some Big Twin models such as FXRs, starting in 1987. FORK LENGTH: The distance between the top of the fork tubes to the centerline of the axle. As an example, if you mocked up a stock 69 FL frame and measure the fork length along the steering neck axis you would arrive at a distance of very near 26.125 inches. Going from 30 to 40 degrees changes trail by 3.3-inches but if the fork crown offset is increased by an inch the effective change in trail is only 2-inches which is within the realm of manageability and the bikes overall handling won't suffer nearly as much as anti-chopper proponents would have you believe. I want to have all the details worked out before I start getting dirty. Diameter of … Thank you for being patient in the mean time. HTTMT Integrated Internal Fork Stops Kit For 1936-2019 Harley Models & Chopper Wide Glide Springer Neck Cups [P/N: NCK001] 4.3 out of 5 stars 23 $53.89 - $151.29 OEM Harley forks are in the 31 to 32" range. Certain geometry and measurements should be understood before purchasing the front forks for your motorcycle or chopper. Triple tree rake angle. twisted choppers wide springer front end ***built to order per your measurements-no returns accepted*** all components are cnc machined for accuracy, quality and appearance. Not trusting the online trail calculators on the internet, I used a CAD program to calculate a large number of setups, taking into account downtube stretch, neck rake and triple tree rake, and crunching the numbers for trail and fork length for every possible combination. degrees. However if you factor in the stock 2.5” of fork offset the actual length of the forks you would need to order is 27.625 inches. Only 2 left! C $270.71. PRISTINE! Changing fork length. You may have to register before you can post: click the register link above to proceed. Neck height – With the frame sitting on the floor, measure the distance from the ground to the center of the frame neck, if the ride height is 3.5″, then add this to the frame neck height. We will send E-mail out when we have our Grand Re-opening. Fork Length Chart and Rake/Trail Calculator If this is your first visit, be sure to check out the FAQ by clicking the link above. To determine what length of fork tube to use for a stock tubular fork, measure the stock fork with weight on it before removing. People liked the look, and forks got longer. Super clean, all original, low-mile bike, without a scratch. We manufacture motorcycle fork-tubes. Precision machined from 1 1/2" thick 7075 aircraft grade billet aluminum. If you only have the frame, measure from center of top of steering neck perpendicular to the ground and add 1" to this measurement. You may have to register before you can post: click the register link above to proceed. Custom Motorcycle Parts & Accessories: Chopper Supply LLC 662-449-0956 Hernando, Mississippi. This is a black plated triple tree long chopper fork. I’m guessing the rake will be in the high 40's. Length from the center of the steering neck at top of triple clamp perpendicular to the ground. Be sure to check out our new products for Harley Sportster. I’m guessing the rake will be in the high 40's. $1,150. The first thing you need to know how to do is take measurements for your new built to order piece of hardware. Going from 30 to 40 degrees changes trail by 3.3-inches but if the fork crown offset is increased by an inch the effective change in trail is only 2-inches which is within the realm of manageability and the bikes overall handling won't suffer nearly as much as anti-chopper proponents would have you believe. Tools. If your stock upper tubes are pitted and worn out or if you are going to play chopper, you need new fork tubes! Top stop of the CX neck has to be removed, bottom has to be shaved down a little. The best solution is to use a little of both. we calculate the correct length based on the measurements you provide to ensure an accurate fitment. Triple tree rake angle. Measuring Fork Length. start with this calculator rb racing fork length and trail calculator then mockup frame+ wheel and , ideally if you already have the tree. Be sure to check out our new products for Harley Sportster. $139.97. Buy It Now. A chopper is still a chopper whether it has a 750 Honda motor, an S&S 145 or a small block Chevy. 26"TRIPLE TREE 29" length Cruiser CHOPPER BIKE BICYCLE FORK 1 " threaded. degrees. L S p o n 6 B s o r e B Y d W J S H X. Over Stock Length Fork Tube Sets: - Order 41mm in lengths up to 16" over stock for 84-99 FXST sets below - Any diameter or length or year available - just call! C $270.71. Inputs. They then cut into the neck area of their bike's frame and "raked the neck". Front forks have stepless preload adjustment along with compression and rebound adjustment. the lower triple tree is machined to accept an internal fork stop and the neck stem uses standard 1″ neck bearings. The distance between the point where the tire makes contact with the ground and a vertical line from the center of the front wheel's steering axis to the ground is the bike's trail. $65.00. 222mm ( ref) -. If your stock upper tubes are pitted and worn out or if you are going to play chopper, you need new fork tubes! we use 4130 chromoly tubing for superior strength. This is a black plated triple tree long chopper fork. Length from the center of the steering neck at top of triple clamp perpendicular to the ground. 25mm, 171.45mm long. Nov 27, 2020 - After my fair share of USD fork swap on all kinds of bikes, this is my list of notes, tips and things to consider when doing your own. DIAMETER: The diameter of the front tire. Front forks have stepless preload adjustment along with compression and rebound adjustment. $17.75. 1. When we increase the rake angle by raking the NECK 10 degrees we INCREASE the trail. 26"TRIPLE TREE 29" length Cruiser CHOPPER BIKE BICYCLE FORK 1 " threaded. Beastly 117 inch carbureted S&S Superstock, chromed & polished w/ a 6-speed. Regular price. Inputs. The 2005 American IronHorse Texas Chopper Base is a Chopper Style Motorcycle equipped with an 1819cc, Air Cooled, V Twin, OHV - Pushrod, 4-Stroke Engine and a 6-Speed Manual Transmission. Chopper planner version 0.1: Despite the name, the inputs and outputs of this form can be applied to bicycles and wheelchairs, as well as all styles of motorcycles. Stiffer than CBR929RR. Triple Tree Rake: degrees RAKE: The angle in degrees of the steering neck from vertical. 26"TRIPLE TREE 29" length Cruiser CHOPPER BIKE BICYCLE FORK 1 " threaded. The 2005 American IronHorse Texas Chopper Base is a Chopper Style Motorcycle equipped with an 1819cc, Air Cooled, V Twin, OHV - Pushrod, 4-Stroke Engine and a 6-Speed Manual Transmission. Common practice was to increase rake from a standard rake of about 28º to 35-45º. If you own a Harley, Honda, Yamaha, Kawasaki, or Triumph you can find parts for your bike here. Narragansett Lab Current Research and Features. 38632 www.CHOPPER-KIT-USA.COM Enter 3 of the 4 values below to calculate the 4th. Aftermarket forks are in the 30", 32", 34" or longer range. Chopper Supply offers 39mm, 41mm, & 82mm bolt-on rake kits for Harley-Davidson Sportster models. We will send E-mail out when we have our Grand Re-opening. Overall length: 30" (750mm) Steere length: 9 1/2" (240mm) Fork … Stiffer than CBR929RR. We use 1 … Overall length: 30" (750mm) Steere length: 9 1/2" (240mm) Fork … with that calculator I get 32.78" fork length 5.43" trail with 3deg rake 31.39" fork length 7.61" trail with 0deg rake 33.83" forks 3.85" trail with 5deg rake The first one fits the 4-6" rule, now the factory says 38deg, but my cheap angle finder says 35deg with the frame level. Enter 3 of the 4 values below to calculate the 4th. $1,240. If your stock upper tubes are pitted and worn out or if you are going to play chopper, you need new fork tubes! Once marked, you can cut the main tube with a pipe cutter or d hacksaw, and also cut most of the head tube from the set of forks. the lower triple tree is machined to accept an internal fork stop and the neck stem uses standard 1″ neck bearings. 17". Steer tube: 1 1/8" threadless. We stock over and under and stock lengths. Increasing the length of the fork, for example by switching from rigid to suspension, raises the front of a bicycle and thus decreases its head angle. Enter 3 of the 4 values below to calculate the 4th. A chopper is still a chopper whether it has a 750 Honda motor, an S&S 145 or a small block Chevy. Lowrider Bike Chopper Fork 1 Inch Threaded 30 Long Black.Bicycle Chopper Fork. Be sure to check out our new products for Harley Sportster. So you want to ditch the stock hydraulic front end for a custom springer. $65.00. Regular price. Fork Rake (offset) mm. Buy It Now +$24.99 shipping. This is a black plated triple tree long chopper fork. Super clean, all original, low-mile bike, without a scratch. Fork length is simply the measurement, usually in inches, from the top of the fork tubes to the center-line of the front axle. Fork rake works in most cases with the triple trees which create the fork rake; however, triple trees with raked steering stems have additional adjustments, usually of 3 to 7 degrees rake, which are used to adjust trail. Sculptured Struts, side plate, compact Low Rear Fender, Flush-Mounted Axles, Braided Cables, Pillion Pad included. It's the long forks that make it the bike a chopper. If we rake the front by putting 10 degrees all in the TRIPLE TREE we REDUCE the trail. Compares a known setup's geometry to geometry resulting from planned changes to wheel size, fork length, etc. we use 4130 chromoly tubing for superior strength. We carry past models from the 1950s through today's models. If we rake the front by putting 10 degrees all in the TRIPLE TREE we REDUCE the trail. Top and bottom braces can be moved up or down to fit your need. This will not be used since it will be inside the main tube after welding. Fork Rake (offset) mm. Precision machined from 1 1/2" thick 7075 aircraft grade billet aluminum. SUNLITE Deluxe 26" Springer Fork Replica, 1" (Threaded) 4.2 out of 5 stars. Some people are concerned that the new, longer (or less commonly, shorter) fork lengths might adversely affect handling by changing the bike's steering geometry. Nov 27, 2020 - After my fair share of USD fork swap on all kinds of bikes, this is my list of notes, tips and things to consider when doing your own. It has a Telescopic Fork Front Suspension while the Rear Suspension consists of a Twin Sided Swing Arm. 28" Inline Spring Fork Assembly Chrome for Harley Panhead Knucklehead Chopper —. Harley Davidson Panhead Shovelhead Chopper 41mm Fork Tubes 26 Length 6" Over. Fork Length Chart and Rake/Trail Calculator If this is your first visit, be sure to check out the FAQ by clicking the link above. HTTMT Integrated Internal Fork Stops Kit For 1936-2019 Harley Models & Chopper Wide Glide Springer Neck Cups [P/N: NCK001] 4.3 out of 5 stars 23 $53.89 - $151.29 Beginning Fork Length: inches : Length from to top of the fork tubes to the centerline of the axle. Beginning Fork Length: inches : Length from to top of the fork tubes to the centerline of the axle. Beautiful Bike. RAKE: The angle in degrees of the steering neck from vertical. Top and bottom braces can be moved up or down to fit your need. 38632 www.CHOPPER-KIT-USA.COM Harley Davidson Panhead Shovelhead Chopper 41mm Fork Tubes 26 Length 6" Over. The total length from the fork tips to the cut on the pipe should be 44 inches. To Convert a Curved Fork Length (inches) to a Whole Weight (pounds): Select a species: White Shark Blue Shark Tiger Shark Mako Shark Thresher Shark Porbeagle Sandbar Shark Dusky Shark. start with this calculator rb racing fork length and trail calculator then mockup frame+ wheel and , ideally if you already have the tree. To Convert a Curved Fork Length (inches) to a Whole Weight (pounds): Select a species: White Shark Blue Shark Tiger Shark Mako Shark Thresher Shark Porbeagle Sandbar Shark Dusky Shark. Buy It Now +$24.99 shipping. Aftermarket forks are in the 30", 32", 34" or longer range. Tools. Triple tree width – this is the actual width of the triple trees – usually 1 or 1.5 inches. The total length from the fork tips to the cut on the pipe should be 44 inches. degrees. with that calculator I get 32.78" fork length 5.43" trail with 3deg rake 31.39" fork length 7.61" trail with 0deg rake 33.83" forks 3.85" trail with 5deg rake The first one fits the 4-6" rule, now the factory says 38deg, but my cheap angle finder says 35deg with the frame level. Beautiful Bike. twisted choppers mid springer front end ***built to order per your measurements-no returns accepted*** all components are cnc machined for accuracy, quality and appearance. We produce 2 versions to choose from, a narrow and wide glide which allows for different style front wheels and hubs. Allows you to add your own custom setups to the dropdown list. Fork Length Chart and Rake/Trail Calculator If this is your first visit, be sure to check out the FAQ by clicking the link above. all components are cnc machined for accuracy, quality and appearance. The rake is the angle formed between the neck on the frame of a bike and a vertical line. Headtube Angle. Your choice of … the lower triple tree is machined to accept an internal fork stop and the neck stem uses standard 1″ neck bearings. Increasing the length of the fork, for example by switching from rigid to suspension, raises the front of a bicycle and thus decreases its head angle. However if you factor in the stock 2.5” of fork offset the actual length of the forks you would need to order is 27.625 inches. 39mm Fork Tubes 24.25" Stock Length For Sporster / Dyna Narrow Glide - Hard Chrome. Beginning Fork Length: inches : Length from to top of the fork tubes to the centerline of the axle. I’m planning a pseudo-long bike build. There is no other after-market manufacturer of German, Spanish, or Japanese fork-tubes. The 2005 American IronHorse Texas Chopper Base is a Chopper Style Motorcycle equipped with an 1819cc, Air Cooled, V Twin, OHV - Pushrod, 4-Stroke Engine and a 6-Speed Manual Transmission. Aftermarket forks are in the 30", 32", 34" or longer range. Pictured is a Big Dog K9 which has 39 degrees of rake, 3 degree raked trees, and 12" over forks… Buy It Now +$24.99 shipping. anywhere from 4" to 12" over stock, while, maintaining the correct trail for the best handling. TC Bros is the top supplier of DIY custom bobber and chopper motorcycle parts. Length from the center of the steering neck at top of triple clamp perpendicular to the ground. If you own a Harley, Honda, Yamaha, Kawasaki, or Triumph you can find parts for your bike here. Triple Tree Rake: degrees 57 sold. Over Stock Length Fork Tube Sets: - Order 41mm in lengths up to 16" over stock for 84-99 FXST sets below - Any diameter or length or year available - just call! the lower triple tree is machined to accept an internal fork stop and the neck stem uses standard 1″ neck bearings. As an example, if you mocked up a stock 69 FL frame and measure the fork length along the steering neck axis you would arrive at a distance of very near 26.125 inches. place blocks of wood under the frame so it levels at desired clearance, actualy i would set the front a bit, let’s say .5’ higher- that will be negated by appropriately tuned suspension when the bike compresses with it own wt the fork about 1”. twisted choppers mid springer front end ***built to order per your measurements-no returns accepted*** all components are cnc machined for accuracy, quality and appearance. I’m going to run a 19inch front wheel and the down tubes are going to be +4. web app: Calculate frame geometry of an existing bike through simple XY measurements. Originally Published In The March 2015 Issue Of Cycle Source Magazine. 30. Harley-Davidson motorcyles can be raked and turned into the most radical choppers. This is a must-see. Compare and/or match fit of two bikes. 57 sold. Top stop of the CX neck has to be removed, bottom has to be shaved down a little. This set will allow you to install all most 20", 24" and 26" wheel in the market. L S p o n 6 B s o r e B Y d W J S H X. Allows you to add your own custom setups to the dropdown list. L S p o n 6 B s o r e B Y d W J S H X. +C $148.90 shipping. Fork rake works in most cases with the triple trees which create the fork rake; however, triple trees with raked steering stems have additional adjustments, usually of 3 to 7 degrees rake, which are used to adjust trail. Article By: Twisted Choppers – twistedchoppers.com. Springer Forks & Frontends. Once marked, you can cut the main tube with a pipe cutter or d hacksaw, and also cut most of the head tube from the set of forks. we use 4130 chromoly tubing for superior strength. DIAMETER: The diameter of the front tire. Brand New. The long forks are an extension of the original racers, who would lengthen the forks to obtain more ground clearance. Which on do I believe? Top stop of the CX neck has to be removed, bottom has to be shaved down a little. 52" Inline Spring Fork Assembly for Harley Panhead Knucklehead Chopper —. Neck height – With the frame sitting on the floor, measure the distance from the ground to the center of the frame neck, if the ride height is 3.5″, then add this to the frame neck height. In order to do this, I operated under the following assumptions: 1. The long forks are an extension of the original racers, who would lengthen the forks to obtain more ground clearance. The result is 4.35" of Trail. - Includes 100 Pages of Instruction, 100 photos, 3 Springer Plans and 1 Leafer Plan. Test size and fit of a frame before buying. It's the long forks that make it the bike a chopper. ... Chopper Builders Handbook Leafers CD-ROM: - A must have for aspiring builders. 28" Inline Spring Fork Assembly Chrome for Harley Panhead Knucklehead Chopper —. Twisted Choppers Shows Us How. Some people are concerned that the new, longer (or less commonly, shorter) fork lengths might adversely affect handling by changing the bike's steering geometry. Lengthening the fork would have the opposite effect on the rake of a motorcycle, since rake is measured in the opposite direction. Beastly 117 inch carbureted S&S Superstock, chromed & polished w/ a 6-speed. we use 4130 chromoly tubing for superior strength. Regular price. $123.99. This set will allow you to install all most 20", 24" and 26" wheel in the market. Headtube Angle. Our Executioner Springers are handcrafted by machinist and bike builders, precision CNC machined and all TIG welded in-house. LOW -MILE Big Dog K-9 LIKE NEW 2009 BIG DOG K-9 CHOPPER - Pristine K-9, Found. Common practice was to increase rake from a standard rake of about 28º to 35-45º. Calculate a full chart from the often sparse geometry chart provided by the manufacturer. The total length from the fork tips to the cut on the pipe should be 44 inches. Beastly 117 inch carbureted S&S Superstock, chromed & polished w/ a 6-speed. Narragansett Lab Current Research and Features. 57 sold. Certain geometry and measurements should be understood before purchasing the front forks for your motorcycle or chopper. A chopper is still a chopper whether it has a 750 Honda motor, an S&S 145 or a small block Chevy. Enter a Curved Fork Length … the lower triple tree is machined to accept an internal fork stop and the neck stem uses standard 1″ neck bearings. We stock over and under and stock lengths. As an example, if you mocked up a stock 69 FL frame and measure the fork length along the steering neck axis you would arrive at a distance of very near 26.125 inches. Not trusting the online trail calculators on the internet, I used a CAD program to calculate a large number of setups, taking into account downtube stretch, neck rake and triple tree rake, and crunching the numbers for trail and fork length for every possible combination.