Lucked Out on this One!

Street Ryderz

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#1
I'm allways looking at used bikes for sale just incase something good pops up.When I saw this listed I thought the owner must have just gave up for whatever reason and or is hard up for cash because when I started to add up the total cost in parts of what I received OMG! There is well over $1,600 worth of parts here and I paid $400 Canadain thats $310 U.S. For a tank frame with Girvin front suspention a Strumey Archer front drum hub laced with 12 gauge spokes in a really wide unknown rim,A Strumey Archer rear 2 speed hub agian laced with 12 gauge spokes in an aluminum rim along with a disk hub front aluminum rim.A hub adaptor with 40t,sprung chain tensioner,on a brand new Grubee Skyhawk with an R.S.E. head and a gt6 (GasBike) head speed carb and a cns carb,cnc intake,volosity stack,Lightning cdi and coil,along with gears cables and some odds and ends LOL.I also recived a triple tree suspension fork,a reg suspension fork and a twisted springer fork looks like it might only be for a 20" wheel though not sure yet.
 

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Street Ryderz

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#3
Anyone have any experience with these Girvin vector suspension forks?I took them all apart and cleaned them up,polished the stem and lower pivot and the upper plate and replaced the gromet/spacers then rebuilt the shock.When reassembled I made sure that everything moved freely and smooth and it all works great except that I tought this fork was a linear vertical movement and that's not what they do!They compress inwards more than anything,there is only slight vertical lift.
 

FurryOnTheInside

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#4
Anyone have any experience with these Girvin vector suspension forks? ....
I thought this fork was a linear vertical movement and that's not what they do! They compress inwards more than anything,there is only slight vertical lift.
No experience; but if that's the case then they're useless. Auction them off, lol. ;)
 

Street Ryderz

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#5
No experience; but if that's the case then they're useless. Auction them off, lol. ;)
LOL I really dont see what the hype for this syle of fork is,,,But folks want it, The cheapest found on ebay like it were 235 U.S. and I got them cheap so just wanted to do a build with late model board tracker look. But no disk brake tabs limited travel and really only slightly lighter so other than that mechainical look I dont get it,Apparently I have them correct but there's a cammed shaft on the upper outter link that changes the amount of draw through it's lift range,It's cool how a little bit of geometry changes the action so much.
 

FurryOnTheInside

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#6
LOL I really dont see what the hype for this syle of fork is,,,But folks want it, The cheapest found on ebay like it were 235 U.S. and I got them cheap so just wanted to do a build with late model board tracker look. But no disk brake tabs limited travel and really only slightly lighter so other than that mechainical look I dont get it,Apparently I have them correct but there's a cammed shaft on the upper outter link that changes the amount of draw through it's lift range,It's cool how a little bit of geometry changes the action so much.
Would it work with a chopper style frame, with a laid back head angle? Still, with no front brake it could never be a very safe and practical bike.
 




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#10
Girvin... That's a name I haven't heard of in years..! I remember my brother had a Girvin Flex Stem on an Avanti MTB when we were growing up. We thought it was the absolute bomb..!!

That fork sure looks tough. Not sure how well that rearward moving compression would go though... interesting.
 

Frankenstein

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#11
It has regular rim brake post's but not disk tab's I have a strumey archer xfd for it though.
I don't think it's sitting low enough, as in shouldn't the part holding the wheel be pushed further down? When you first started mentioning it I thought initially your fork wasn't extended completely..

That video above explains exactly what I'm saying, under little load the fork should sit as low as it is in the video, if it isn't a stop is wrong or something in upside down. Or incorrectly assembled, might need more pretension in the suspension spring before putting it together.
 

Street Ryderz

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#12
We have had a long winter here and other than parts accumulation not much has got done lately,I have gone all through this bike and found lot's of thing's that could have been issues down the road.This is how it's looking at the moment,

2018-03-20 01.18.43.jpg

But the low bar's aren't going to stay though it does look cool IMO.Had a chance to pull the engine apart now and balenced the crank and true it to within 1 thou,used live center's in the lathe and dial indicator then backed each weight flush (square) with chuck and double checked it for pic.
2018-04-18 11.21.11.jpg

The cylinder is done ported for good low end power not a screamer,just finished the bottom end assembly today with stainless hardware EVERY WHERE lol bearings,seals,all fresh it need's the piston done and will be ready to be remounted.I dont think the commen cnc heads will fit in there it looks pretty tight but yet to be seen.
 




Street Ryderz

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#16
Looks good. Did you get the fork figured out? I've been looking for one since you started this thread but they are too damn expensive.
Yes I had the cams reversed but I figured it out,and yes they are kinda expensive atm but they really do look cool! TBH they are not the best choice for functionality but they are light the whole bike is just under 70lbs.
 


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