i am building a custom propain tyee and its made for mullet or full 29
i have a wheelset ready but is 27.5
should i put the flip chip in the 29 position and use a 160mm fork (wich the bike is made for)
or should i put it in the mullet position and use a 170mm or 180mm
if you have any other suggestions it wil definitely help
:edit:
and then in the 180mm travel option
by mats_eiersalade
9 Comments
How about the best option, which is to use appropriate wheels. Your bike is not intended for 27.5″ up front.
The flip chip doesn’t have a “29 position”. The flip chip is so you can ever so slightly change the geometry and raise the bottom bracket of the bike. It has a High and Low setting.
So what I would do (and did on my SC bullit) is you change out the front 29 for the 27.5, and add 20 mm of travel to your fork with a bigger air spring. This preserves the geo and gives you more front travel.
You can use the mad scientist geo calculator and see how the bikes geo looks with 27.5” wheels
Option 2; mullet with an extra 20mm will let you run 27.5 without messing with the geometry
regardless of what you gonna do, probly need kids cranks to get it done. as far as BB height is concerned. unless you are only riding jump flow.
if ur chuckin 27s on a 29er frame, and ultimately 29 and MX are interchangeable with that flip chip, which is like the new industry thing… but the high BB setting which is typically the MX setting is not gonna bail you out on the 27s outright.
and if you run 27s, yeah the bigger the fork the better. but I feel like thats… getting lost in the sauce in terms of balance and ride feel. kinda depends, but you could run really firm shock and soft fork to get a bit more balance out of a large discrepancy.
which, at that point, spindrift comes in 275 full size range. so… if its just a used bike i guess it is what it is. but if you are building a 27 I would of course try to get a 27 frame. or just the highest BB MX frame you can find I suppose, like YTs or something
but ya. kids cranks is the answer. cuz even with 180 fork and high BB chip its probly still lower than stock.
If you are buying it from propain custom like I did with mine, get the 27.5 version
Unless you are a large
They sell a 27.5 frame, buy that or a new front wheel. You’re making this super complicated.
Extra 10-20mm of fork travel will make up for the wheel difference. Also don’t get a yari, get a better damper. Get a decent fork. Heck last I checked you could get a mezzer pro 27.5 for 300 bucks. If you want a rs get a zeb. But there’s too many good deals to be buying cheap low performance suspension right now.