Hi just got this bike for my son, he is complaining that the fork is not up to standards but the rest of the bike is fine. He found this fork, I just need to check that it fits before I buy it for him. Will the two go together? (Links below!!!)

cheers

Chris

Bike:

https://www.halfords.com/webapp/wcs/s...egoryId_165499

Fork:

https://www.jejamescycles.co.uk/rocks...tem162252.html

You will probably need a post-mount adapter for the brake caliper if the stock fork is the IS mount.

Yes, the fork should work; and as long as the front disc is only 6" you won't need any adapter for the post mount - - caliper will bolt directly to it.

Thanks, my fork is IS mount, the attachment holes go all the way through, I think!!! I think I am sold, the steering tube and wheels will fit, right???

Thank you for all your help, it is much appreciated.

Chris

What is wrong? Isn't the rockshox dart 3 IS mount, and he has said that it is post mount, is that right??? If not, what has he done wrong???

The Dart is a post mount fork.
Are you sure the brake has IS mounts ?

Assuming the disc rotor is 6"/160mm, the caliper should bolt on to the Dart fork without an adapter (as dminor said). I was thinking 7" for some odd reason.
However, it occurs to me that some cheaper disc calipers (Promax, for instance) don't use an adapter and won't work with the post mount - but someone will correct me if I'm wrong - again.

This is assuming that the brake is a post mount type.
I found a photo of a similar model Apollo bike with a IS mount mechanical disc brake.

Apollo.JPG


Promax brakes can and are used with adapters, I think that the most if not all of the current Promax brakes are PM and they can be directly mounted on a PM fork or mounted on a IS fork with the appropriate adapter.
Some of the older Promax brakes were IS mount and there might of been some limitations to mounting these to a PM fork as there is with other brands of IS mount brakes. There is adapters for mounting IS brakes on PM forks but not all brakes can be used with the 160mm adapter/160mm rotor, sometimes the only way the brake can be used is with a 180/185mm adapter and a 180/185mm rotor.

That looks exactly like my bike, except I need the front brake which is the same. What do i need to do to get the brake in the picture to fit the forks I was looking at?

Thanks again, also just wondering for my son, what do you guys think of that bike?

Chris

I'm guessing that the disc rotors on your son's bike are 160mm.

The following adapter might work but I wouldn't guarantee it: https://cgi.ebay.co.uk/KCNC-Disc-Brak...item415955e79f

Another option is to replace the front brake to one that will bolt straight onto the fork like the following: https://cgi.ebay.co.uk/Shimano-BRM-49...item43a633432f

Here's a bit of talk about that brake: https://forums.mtbr.com/showthread.php?t=168386

There are better mechanical discs but it sounds like you're on a budget and as the bike isn't what you call top quality it probably isn't a good idea to spend too much on it.

Some other brakes you might want to look at: https://www.chainreactioncycles.com/C...0&SortBy=Price

Thank you very much, the adapter looks good but probably a little expensive. My son is claiming that he never uses his front brake so won't need one but I would like one there for him. I just want something cheap!!! Would this adapter fit (link below!)? I don't know whether it comes with a screw to bolt into the PM on the fork. Will it fit or not???

Thanks for the help.

Chris

Adapter:
https://cgi.ebay.co.uk/Front-Post-160...#ht_906wt_1138

That adapter is for fitting a PM brake to a IS mount fork.

Your son should learn to use the front brake more, it will slow him down a lot better then the rear brake will.

Ok, will tell him that!!! didn't realize that the adapter was the wrong way!!! Is there a cheaper one than the one you originally posted???

Thank you

Chris

* There's not many companies that make that type adapter in the 160mm version.
* I couldn't guarantee it would work with the current brake on the bike.
* It isn't that expensive when you compare it to some adapters that cost £40

Fair enough, thank you very much though, I guess the worst case scenario is that i have to return the adapter and have to buy another disc brake. A couple of questions though, 1. Are all Post mount sizes the same and 2. If I took a picture of the bike brake, would it help you give me more concrete evidence or not?

Thank so much for the help, I told my son about using the front brake and he tried it through the woods and said that it did slow him faster and realizes how little control you have with just a back brake!!!

Chris

Might be a idea to ask the seller about returns, that adapter is anodised red and attaching it to a fork with a brake might take some of the red anodised colour off the adapter which would make it look like a used adapter.

Possibly, it wouldn't hurt.

As far as I know all PM brakes use the same size mount.

Thank you, it does say that returns are accepted, also I think I could probably work out if it fits by just aligning it and holding it into position - hopefully!!! I hope these are good enough quality, if not just ask what angle you want and I will take it with a proper camera rather than a phone!!! Thank you very much, hope these are clear enough!!!

Chris

I don't think your brake would work with that adapter.
The lower protruding bolt on your brake that looks to have a spring on it would probably hit the lower part of the adapter or the lower post mount bolt.
You can see the type of brake that will fit on that adapter and how different the shape of it is to the one that you have.

Yeah, I see what you mean, what is the best thing to do, find another fork or change the disk brake???

Chris

Sure seems like it would be a lot less grief (and $$) to just find a fork with IS mount.

Options:

1. Buy a fork with IS mounts and use the current brake.
or
2. Buy a fork with Post Mounts and buy a Post Mount brake.

I don't know anything about the quality of the current brake you have and how well it works, this might be something to take into consideration.
Probably best see what's available in your price range with the different options before making a decision on what to do.

The front brake won't need to be high performance does anyone have a second hand one or can anyone send me a link to a fairly inexpensive one?

Chris, I wouldn't be so presumptuous as to try to tell you how to deal with your son, but if he doesn't think the front brake is important then he clearly doesn't have enough experience to really complain about the stock fork - not yet. He's probably reading all these forum posts that say things like anything less than a $200 fork is junk. I only point this out because you're going to sink more money into a bike that, when he does have more experience, he's going to decide that the rest of the bike is no longer good enough. Just MHO, please feel free to take it or leave it.

Your probably right, it is just that coming of about 4ft drop-offs causes the front fork to bottom out entirely. He has tried bigger with it and has paid the consequences. Your right about him being inexperienced but I'd say he is going for it!!! He likes the softness of the current fork over woodland trails but it just can't cope with the jumps he is trying to do. It might also be worth saying that the only way we came across this forum was from searching the web for an answer to a new fork, nothing to do with hearing about $200 forks.