Clutch Standard Weight Kit, for TAPP Primary
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The weight in the arms of a TAPP primary can be adjusted in two ways: set screws in the arms, and washers on the roller thru bolt. Your clutch was shipped with a basic tuning kit. As with all other clutches, add weight to lower RPM, remove weight to raise RPM. Set screws in the arms affect the low-speed shift points more than the high speed and will reduce the max RPM. Weight on the roller axle bolt acts like tip weight in a conventional clutch, affecting the high-speed more than any other part of the curve. Adjust this as needed for your application.
STANDARD WEIGHT KIT INCLUDES:
- Eight (8) 1/2 inch Allen screws
- Four (4) 1-1/2" Roller Bolts
- Four (4) 1-3/4" Roller Bolts
- Four (4) 2" Roller Bolts
- Four (4) Nylon Nuts
- 16 regular washers
IMPORTANT - As with all other adjustments, do this evenly and only in pairs across from each other, failure to do so will result in an imbalance of the clutch and possible failure.
Allen screws must be added in pairs opposite to one another. Allen screws are .500”, weighing 2.7 grams. Adding two Allen screws will add 5.2 grams. Adding all eight Allen screws will add 20.8 grams.
The weight in the arms of a TAPP primary can be adjusted in two ways: set screws in the arms, and washers on the roller thru bolt. Your clutch was shipped with a basic tuning kit. As with all other clutches, add weight to lower RPM, remove weight to raise RPM. Set screws in the arms affect the low-speed shift points more than the high speed and will reduce the max RPM. Weight on the roller axle bolt acts like tip weight in a conventional clutch, affecting the high-speed more than any other part of the curve. Adjust this as needed for your application.
STANDARD WEIGHT KIT INCLUDES:
Eight (8) 1/2 inch Allen screws
Four (4) 1-1/2" Roller Bolts
Four (4) 1-3/4" Roller Bolts
Four (4) 2" Roller Bolts
Four (4) Nylon Nuts
16 regular washers
IMPORTANT - As with all other adjustments, do this evenly and only in pairs across from each other, failure to do so will result in an imbalance of the clutch and possible failure.
Allen screws must be added in pairs opposite to one another. Allen screws are .500”, weighing 2.7 grams. Adding two Allen screws will add 5.2 grams. Adding all eight Allen screws will add 20.8 grams.
HARDWARE |
DIMENSION |
WEIGHT |
Socket Head Screws (4) |
1.5" |
5.8 grams |
Socket Head Screws (4) |
1.75" |
6.8 grams |
Socket Head Screws (4) |
2.00" |
7.5 grams |
Nylon Locknut (4) |
10-32 |
2.2 grams |
Washer (16) |
0625 (1/16")
|
1.2 grams |
This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code§§ 27156 and 38391]. This product is sold only for use in connection with EPA -certified, purpose-built, nonroad vehicles used solely for closed course,
nonroad competition/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and/or federal noise or emission standards/regulations. Purchasers who/that purchase this product
represent and warrant that the product is purchased only in connection with EPA -certified, emission-regulations-exempt and noise-regulations-exempt competition/racing vehicles as interpreted under applicable state and/or federal law. Questions: Call Evolution Powersports at (715) 247-3862.
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My car is absolutely insane. LOVE it. Thank you for everything. Zero issues and even in 95 degree ambient it's not over heating dining or anything. This power dining is 100% perfect. Car is a beast. You guys Rock! - Dynomite Turbo Kit
Evolution Powersports has a reputation of the utmost quality and attention to detail on every product they design. From within the industry and outside, I have heard nothing but great things about this company and my experience has been the same. If you are looking to make more reliable power this company can get you there. Both customer service and product design are top notch and they stand behind their work!
Don’t spend much of your money here unless you want gobs and gobs of reliable power
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If you truly want to build your project with the best possible parts available, buy EVO. They not only build with the best materials they test and test to make sure you are getting the performance gains they say you will but that the mods will be safe and keep the reliability of the machine as high as possible. Thanks again to both Jim and Todd. Keep it up guys!
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I have had such a great experience with EVO over the course of a year, I wouldn’t even try going anywhere else. Prices are fair and the performance you receive is unreal!!
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