Merijn Posted September 18, 2019 Share Posted September 18, 2019 Hello all, my first post here. I have a '89 powerscreen engine stored and decided to do something with it, so I bought a '89 slingshot 750 frame to build a 7/11 from there on. But now I can't really find any information on the sprocket ratio. Is it common to use the standard sprocket size of the engine, or is there a recommended one? Hope someone can help me with this, thank you in advance! Quote Link to comment
dupersunc Posted September 18, 2019 Share Posted September 18, 2019 Use the stock 15/48 that the gsxr1100 uses. 14/48 if you want to save front tyre wear. 1 Quote Link to comment
Blubber Posted September 18, 2019 Share Posted September 18, 2019 Hi, Welcome to OSS, Introduction in general please PS. We like pictures and have rules 2 Quote Link to comment
Askamaskinservice Posted September 18, 2019 Share Posted September 18, 2019 Welcome to OSS, we like pictures .........A LOT.......... 1 Quote Link to comment
Merijn Posted September 18, 2019 Author Share Posted September 18, 2019 2 hours ago, dupersunc said: Use the stock 15/48 that the gsxr1100 uses. 14/48 if you want to save front tyre wear. Thanks! 2 hours ago, Blubber said: Hi, Welcome to OSS, Introduction in general please PS. We like pictures and have rules Will do! Still collecting parts and gathering info, will post pictures when I start building 1 Quote Link to comment
Swiss Toni Posted September 19, 2019 Share Posted September 19, 2019 Hi, and welcome! Plenty on here use the old Powerscreen engine as a good base! Tourqey! 1 Quote Link to comment
carlinmidarlin Posted September 27, 2019 Share Posted September 27, 2019 Try 14/47 for a laugh 1 Quote Link to comment
Ivan Posted September 27, 2019 Share Posted September 27, 2019 My 6/11 has 14/48 1 Quote Link to comment
carlinmidarlin Posted September 28, 2019 Share Posted September 28, 2019 What’s it go like now Quote Link to comment
bluecatone Posted October 14, 2019 Share Posted October 14, 2019 I'm fitting a 88 GSX1100F on a 82 GSX750E with 86 GSXR750 front and rear end, the GSXF sprockets are 15/52 should I go a little bigger on the back since the GSXR wheel is bigger in diameter? Thanks. Quote Link to comment
Gixer1460 Posted October 14, 2019 Share Posted October 14, 2019 I was surprised to see that an 1100F used 52T rear as the GSXR1100 uses a 48T std. and mine used to pull a 45T quite easily. So no you don't want to go bigger unless you want zero front tyre wear! I thought they were both 17" rims? Quote Link to comment
dupersunc Posted October 14, 2019 Share Posted October 14, 2019 Gsxf had a helically cut primary, so I guess the ratio was different also. 15/52 would make a gsxr1100 pretty lively. Quote Link to comment
Merijn Posted October 14, 2019 Author Share Posted October 14, 2019 5 hours ago, Gixer1460 said: I was surprised to see that an 1100F used 52T rear as the GSXR1100 uses a 48T std. and mine used to pull a 45T quite easily. So no you don't want to go bigger unless you want zero front tyre wear! I thought they were both 17" rims? Gsxf has a 16" rim. The F is a lot heavier than a 7/11 tho, wouldn't that be a factor as well? Quote Link to comment
Gixer1460 Posted October 14, 2019 Share Posted October 14, 2019 35 minutes ago, Merijn said: Gsxf has a 16" rim. The F is a lot heavier than a 7/11 tho, wouldn't that be a factor as well? Odd as a 15/52 is lower geared than a 15/48 and with a lower rolling circumference goes less distance per rev - maybe it runs a taller profile to equal a 60 profile on GSXR ? Yes weight would be an issue on accel. but as a general / touring use, top speed wouldn't be so crucial? Quote Link to comment
Merijn Posted October 14, 2019 Author Share Posted October 14, 2019 (edited) 44 minutes ago, Gixer1460 said: Odd as a 15/52 is lower geared than a 15/48 and with a lower rolling circumference goes less distance per rev - maybe it runs a taller profile to equal a 60 profile on GSXR ? Yes weight would be an issue on accel. but as a general / touring use, top speed wouldn't be so crucial? The GSXF has an 150/80, so yeah that'll be about the same as the GSXR then. Edited October 14, 2019 by Merijn Quote Link to comment
Ivan Posted October 15, 2019 Share Posted October 15, 2019 On 9/28/2019 at 9:02 AM, carlinmidarlin said: What’s it go like now 14/48 is fine by me for my gsx6-11f, became fast bike Quote Link to comment
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