Trunnion Posted June 26, 2018 Share Hi Guys, I am wanting to fit a RockShox Super Deluxe coil RCT to my 2017 Giant Trance. From scouring the internet I have found that people have fitted some coil shocks to the previous generation Trance's, but cannot find anything on the newer ones with trunnion metric shocks. I know the standard size for the Trance shock is 185 x 52.5 and the Super Deluxe Coil for Norco Sight is 185 x 55, but quite a few people have fitted 55mm stroke air shocks to the '17 and up trance's with success. So the extra 2.5mm stroke should not matter, and if it does I could spacer it back to 52.5mm. What I am more worried about is clearance for the rebound adjuster knob as it looks like it will come pretty close to the downtube of the frame where it is hollowed out for the shock pivot point (the water trap haha). Although it seems to clear in the Reign frame just fine.... Also possible water bottle clearance issues with the cannister? Clearance issues with the top pivot or seat tube? My frame is a Medium size. Any other potential issues? The reason for my wishing to go coil is because I am trying to get away from the "pop" of the air shock. I have been running my Deluxe RT with rebound set to full damping since I bought the bike. This does tend to make the back end a bit harsh over the smaller repetitive bumps, but if I have it rebound faster then it pogos on hard landings and bucks me on steep faced jumps. Really I am looking for the more linear nature of a coil shock so the rebound does not get overwhelmed on full compression of the shock. Coming from an enduro and trials motorbike background these air shocks feel way too lively. Fun on flowing fast trails but scare the bejeesus out of me on steep lipped jumps with my limited jumping abilities. With the pedal modes offered on the coil shocks now, and TI springs to bring down the weight I am hoping a coil shock is what I am looking for. TL;DR- will this shock fit my bike without issues? Shown below in a longer length fitted to a Reign. Link to comment Share on other sites More sharing options...
Odinson Posted June 26, 2018 Share Can't really help you out on the question whether it would fit and how it would affect the rear wheel travel. Do you have your heart set on the Deluxe Coil? Have you looked into other imperial coil options, such as the Vivid Coil? Maybe even a Kage, although it is the budget option. Link to comment Share on other sites More sharing options...
Trunnion Posted June 26, 2018 Share I stand to be corrected but as far as I know with my metric shock being a trunnion mount none of the older shocks will fit. It would also appear that RockShox are one of the few making a shock in this size right now. Link to comment Share on other sites More sharing options...
PhilipV Posted June 26, 2018 Share Look out for the product ID code on the shock. Should be four letters, then put that into the appropriate box on the Fox shox website. It will give you a breakdown on the shock tune and of there are any volume spacers inside. My 16trance came with the biggest volume spacer already installed. If the same applies to yours, removing the spacer will make the shock less progressive, and might be a good starting point. Alternative would be to send the shock to one of the suspension tuning experts like RBC in Port Elizabeth, Stoke in Cape Town or Cogent Industries in Gauteng, to have them stroke some magic put of it. They'll be able to advise you of the feasibility of your plan. I've had dealings with Stoke and RBC and can recommend them both. If you get a coil, the shock tune might need to be adjusted (rebound, compression and damping tunes of the shocks are tailored to the frame requirements according toe the OEM specs.) oh and the 2.5mm longer stroke will equate to more travel, which might be lekker, or it might mean tyre buzz. Link to comment Share on other sites More sharing options...
Odinson Posted June 26, 2018 Share I stand to be corrected but as far as I know with my metric shock being a trunnion mount none of the older shocks will fit. It would also appear that RockShox are one of the few making a shock in this size right now. Ah, crap. Ignore my post. Saw you have the new metric Trance. Link to comment Share on other sites More sharing options...
Trunnion Posted June 26, 2018 Share Thanks, I will check it out and see what I have.I am a bit leery of removing volume spacers( if it has any) as I already bottom out the shock now and then. Of course a coil shock would be more linear and also easier to bottom out, but it does have that large bumper stop that I hope would take more abuse than an air shock. I guess I am also looking forward to trying out a coil for it's other advantages. I did think about sending it away to get worked on but I'm not sure how easy it is to tune out the problem I am having. According to a YouTube video I watched from Vorsprung Suspension the preload on the rebound stack in this shock (and a lot of other RockShox shocks) is so great that it never opens. Confirmed by dyno testing apparently. So the shock only has orifice rebound damping in effect. I realise I am taking a guess at this but it feels like this may be the case, but when it gets maximum compression it then feels like that rebound valve does open and gives the shock a boost of rebound speed. So the preload on the rebound stack could be increased further, or it's shim travel limited I suppose...? I thought of mucking about myself and hopefully learning some things along the way, but this is my only shock, and my only bike. Link to comment Share on other sites More sharing options...
Yo-Yo Posted June 26, 2018 Share Calling (or call) @Droo and Stoke Suspension to give advice. Link to comment Share on other sites More sharing options...
usxorf Posted June 26, 2018 Share Thanks, I will check it out and see what I have.I am a bit leery of removing volume spacers( if it has any) as I already bottom out the shock now and then. Of course a coil shock would be more linear and also easier to bottom out, but it does have that large bumper stop that I hope would take more abuse than an air shock. I guess I am also looking forward to trying out a coil for it's other advantages. I did think about sending it away to get worked on but I'm not sure how easy it is to tune out the problem I am having. According to a YouTube video I watched from Vorsprung Suspension the preload on the rebound stack in this shock (and a lot of other RockShox shocks) is so great that it never opens. Confirmed by dyno testing apparently. So the shock only has orifice rebound damping in effect. I realise I am taking a guess at this but it feels like this may be the case, but when it gets maximum compression it then feels like that rebound valve does open and gives the shock a boost of rebound speed. So the preload on the rebound stack could be increased further, or it's shim travel limited I suppose...? I thought of mucking about myself and hopefully learning some things along the way, but this is my only shock, and my only bike.I have a solution for your dilemma, get a reign to go with the coilie! Link to comment Share on other sites More sharing options...
Duane_Bosch Posted June 26, 2018 Share I have a solution for your dilemma, get a reign to go with the coilie!Like this? Link to comment Share on other sites More sharing options...
captain morgan Posted June 26, 2018 Share I agree , just put a CCDB coil on my 2016-reigh .... still playing with tune , already I like it a lot.Also climbs better than I expected.It came of a trance I bought with the coil on in uk. I didn't like it much on the trance but on the reign it seems great. Link to comment Share on other sites More sharing options...
Trunnion Posted June 26, 2018 Share I have a solution for your dilemma, get a reign to go with the coilie!Bud that's only half a solution. The other half is remembering where I planted the money tree? Link to comment Share on other sites More sharing options...
Trunnion Posted June 26, 2018 Share Like this? post-83454-0-93224100-1529906873.jpgSweet Reign! One day... Link to comment Share on other sites More sharing options...
Trunnion Posted June 26, 2018 Share I agree , just put a CCDB coil on my 2016-reigh .... still playing with tune , already I like it a lot.Also climbs better than I expected.It came of a trance I bought with the coil on in uk. I didn't like it much on the trance but on the reign it seems great.I suppose the Reign is designed to work well with a coil, the Trance not so much. What did you not like about it on the Trance? I'm still looking at replacing the cheapie Sektor Silver forks on this bike with a RC2 Lyrik, so if I would get better results having the shock revalved then I would rather not waste money on a coil shock. Link to comment Share on other sites More sharing options...
Sparky and the Warden Posted June 27, 2018 Share I suppose the Reign is designed to work well with a coil, the Trance not so much. What did you not like about it on the Trance? I'm still looking at replacing the cheapie Sektor Silver forks on this bike with a RC2 Lyrik, so if I would get better results having the shock revalved then I would rather not waste money on a coil shock.Have a chat with Brenton from trailtech about mrp coil shocks and forks then chat to Balbazar from Ride with Zeal about the CC coil shocks/forks.... prepare yourself for a looooooong Xmas list???? Link to comment Share on other sites More sharing options...
Trunnion Posted June 27, 2018 Share The CC shocks seem to have way too many reliability issues from what I have read (from here on the hub too), even though they work fantastic when they work, plus I believe hey have to be sent away for servicing? I was hanging out for the DVO ONYX SC fork but they are taking their sweet time. Hoping @Droo will chime in with his expertise on the rear shock conundrum. Link to comment Share on other sites More sharing options...
Simon123 Posted June 27, 2018 Share 2017+ Trance's with coils are tough due to the newer Trunnion mount. Also the leverage action of the linkage is not conducive to a coil, as they use the air-shock's design to prevent bottom out. If you want a coil, get a Reign, the linkage is slightly rising rate and suits a coil better. But you said Sektor fork? Upgrade that first man, it's a turd of a fork... Link to comment Share on other sites More sharing options...
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