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Discussion Starter #1
i know some one has done this whats the top speed results for a stock f7sp with the 23/40 gear change . how did it effect 660 times?
 

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Ice picked 102 1-1/4 " !22 mph Lost 1-2/10 sec in660 but at 1/4 mile was with in 2/100 of sec & kept going
 

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Discussion Starter #3
was that a 22 mph loss in the 660 but only 2 /100th behind in 1/4 mile

in a mile would you top out at mid 120s
 

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I think he meant that his top speed was 122 MPH. And that he lost 1/10-2/10ths in 660'.
 

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Discussion Starter #5
hey thxs jay, i see now hit caps when going for the 1 in 122. that said this would seem like an excellent set up for lake racing distances over 1/4 mile
 

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Sorry guys I meant 2/10 sec lost in 660 ft Down to 1/100 sec almost equal in 1/4 mi & reached 122 mph top end but not in 1/4 mile with this set up Wish it was that fast This is in relation to running stock gears but after 1/4 mile its 23/40 all the way Hope this explaines it self
 

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Discussion Starter #7
thxs for answers byoffcr, now i know how to catch my buds piped and clutched 700 in the 1 mile pond race i was killing him out of the hole but would top out at 100-102 and he would go bye bye says hes running 115 on his speedo top speed
 

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BIG DOG i also have a f7 sno pro and was wondering about the 23/40 gear change. i don't wanna lose any on bottom side but the top side gains you report sound nice. i was wondering if you think some clutching help would give you more bottom help but still keep the top speed close to the same?
 

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Discussion Starter #10
Lf7 im the rookie hear ive been listening to byoffcr, he has spent alot of time playing with the clutch gear setups but let me tell you what i think ive learned of course rider weight will play apart in any set up im a big dog so im a little slower out of the hole than most but im still beating my buds yamaha triple 700 clutched and piped out of the hole by 2-3 sled lengths and beating him till 100 then he catches me and goes by now this is in a mile run, so i figure by switching to a 23/40 we would be close to even out of the hole but as we get near the 1/2 mile i should be ahead and walking away as he says he tops out on his speedo at 115 and i would be theoretically topping out at 120ish. it all depends on the distance raced so if you wanted to to faster to a 1000 you would probably keep the 23/40 and clutch it to help your ets out of the hole. in a 660 or 500 ft you would probably gear down to 21 /39? and clutch for hole shot!
whew ok byoffcr how did i do. did i pass or fail the test. at least im trying this 42 yr brain is a little slow! B)
 

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Big Dog GODS proud of u young man your learning Bless You HE HE good job now if you run the 22/40 u can reach a speed of 115-117 at 7750 -7900 as fast as your buddy depending on your weight if u run 23/40 I think its to high for your weight 7750rpm =120.22 mph mph & 7900 rpm=122.50Dont thonk it will pull it as quick as 22/40 let me know Your stock gearing is 112 mph at 7750 & 114 at7900 rpm mph might be off by 1 mph
 
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