MTBeer Posted March 12, 2018 Posted March 12, 2018 I have a Giant dropper with a single-bolt mounting (see pic) for the seat. It is a pain in the arse (sometimes literally) because the bolt keeps coming loose causing the seat to tilt (usually backwards). Can you replace just the top part of the dropper with something that is more stable?
V12man Posted March 12, 2018 Posted March 12, 2018 Replace the bolt with the correct spec new one and use blue locktite.
porqui Posted March 12, 2018 Posted March 12, 2018 Roughen up the cup and the cone with some course sandpaper just a bit.Had the same problem but fine now.
fanievb Posted March 12, 2018 Posted March 12, 2018 i have a "normal" giant seatpost that used to do the same.loctite and a little tighter than the spec fixed my issue
MTBeer Posted March 12, 2018 Author Posted March 12, 2018 What torque are you tightening the bolt to?fukkintite Nm
MTBeer Posted March 12, 2018 Author Posted March 12, 2018 loctitethought of loctite as well. Not sure how long that will last
CdT85 Posted March 12, 2018 Posted March 12, 2018 thought of loctite as well. Not sure how long that will last Loctite 243 (blue). Just clean the tread on both sides before to make sure there is no oily residue. apply loctite, torque and leave 24h. Problem solved. If all else fails loctite 271 (red) but you will need a blowtorch to heat up the bolt for it to come lose again (not the ideal solution)
GrahamS2 Posted March 12, 2018 Posted March 12, 2018 It's not the bolt coming loose that causes it to slip, it's the slipping that causes the bolt to come loose. Really poor design. Use carbon paste between the rotating plates and tighten well. Won't slip again.
dave303e Posted March 12, 2018 Posted March 12, 2018 Loctite 243 (blue). Just clean the tread on both sides before to make sure there is no oily residue. apply loctite, torque and leave 24h. Problem solved. If all else fails loctite 271 (red) but you will need a blowtorch to heat up the bolt for it to come lose again (not the ideal solution) Note for future use, I have a cheap manual impact driver works well for excessive loctite use, the shock fom the hammer often breaks the loctite's seal/grip enough for you to get it turning. I have had good success with this especially with bolts and screws in aluminium parts
MTBeer Posted March 12, 2018 Author Posted March 12, 2018 It's not the bolt coming loose that causes it to slip, it's the slipping that causes the bolt to come loose. Really poor design. Use carbon paste between the rotating plates and tighten well. Won't slip again.That is the answer I was looking for. It is a really shite design that's why I want to put a decent clamp on there.
GrahamS2 Posted March 12, 2018 Posted March 12, 2018 That is the answer I was looking for. It is a really shite design that's why I want to put a decent clamp on there.I owned one for a few years. Over-tightening the bolt or using loctite won't solve the problem. That said, the recommended torque values are too low.
Hairy Posted October 24, 2018 Posted October 24, 2018 Hi All .... to revive an old thread. Does anyone have one of those bolt lying about ... local bike shops don't seem too keen to find one for me and my bolt head is close to being kaput
BaGearA Posted October 24, 2018 Posted October 24, 2018 Hi All .... to revive an old thread. Does anyone have one of those bolt lying about ... local bike shops don't seem too keen to find one for me and my bolt head is close to being kaput boltfast ?
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