Novice dropouts/axle question

[mornview]

This is a really basic question, but this is the first time I have come across this, and I'd like to get some feedback before I put the effort into lacing this hub.

I bought a front hub for my Heavy-Duti build that I'm dong. The locknut spacing is perfect, but the axle seems a bit skinny for these dropouts:

The hub does bolt on to the dropouts just fine, though:

So my question is - if I can secure the hub to the fork, is it really an issue that the axle is smaller? I know, this is real basic stuff, but I appreciate the feedback. Thanks!

 

[LukeTheJoker]

Looks to me like that drop out widens out as it goes in?
If it is that it may be a type of locking mechanism I have seen before that just looks like a big washer from the outside, but has a small raised section on the inside that fits into the wider section. When the nuts are tightened down it prevents to axle from sliding out.

Not had experience with those frames and forks, but many here have, hopefully one will chime in and let you know.

Luke.

 

[mornview]

Here's a picture of the dropouts without a hub ... doesn't look like anything too out of the ordinary to me:

 

[Bicycle808]

The forks were built for 3/8" (aka 9.5mm) axles; your Malaysian hub probably has a 9mm axle. The fork's ends are definitely bigger than 3/8", but that's normal. I have found that a lot of forks will easily except a 10mm axle, even if they were spec'd for the basically universal 9mm standard.**

Short answer: you'll be fine running that hub as-is. Just make sure your nutz are tight, which is a must regardless of the diameter.

HTH
Rob

** BITD, 5/16" was the front axle standard. Then, 3/8"-- at the same time, 9mm was more common on "import" bikes. Then, everyone seemed to be doing 9mm front/10mm rear. Now, MTBs are running 15mm thru-axle fronts, and 12mm rears.... and there's evidence that high-end road bikes will follow suit. And for maybe the past 20 years, there have been BMX bikes with 14mm axles front/rear. If I even have a point with all of this, I'd say it's that the bike world's "standards" are anything but standardized. Google is your friend, as are forums like this one. We can keep folks from buying incompatible parts, if only they ask!

 

[Dr. Tankenstein]

Would these work?
http://www.ebay.com/itm/3-8-bicycle...Cycling_Parts_Accessories&hash=item2c876b2976

 

[XC204]

Ha lawyer washers! That's what I was thinking too.

 

[dragnusa]

Would these work?
http://www.ebay.com/itm/3-8-bicycle...Cycling_Parts_Accessories&hash=item2c876b2976

Not sure if the Heavy dutys came with them but I know alot of my schwinns have something like that. They have them on there to keep the axle on the fork incase the nut comes lose.

 

[Bicycle808]

You can roll fine without them

 

[Dr. Tankenstein]

Yep, they were on an OCC I had once I think.....

 

[LukeTheJoker]

Would these work?
http://www.ebay.com/itm/3-8-bicycle...Cycling_Parts_Accessories&hash=item2c876b2976

That is what I was meaning!

Luke.

 

[mornview]

The forks were built for 3/8" (aka 9.5mm) axles; your Malaysian hub probably has a 9mm axle. The fork's ends are definitely bigger than 3/8", but that's normal. I have found that a lot of forks will easily except a 10mm axle, even if they were spec'd for the basically universal 9mm standard.**

Short answer: you'll be fine running that hub as-is. Just make sure your nutz are tight, which is a must regardless of the diameter.

HTH
Rob

** BITD, 5/16" was the front axle standard. Then, 3/8"-- at the same time, 9mm was more common on "import" bikes. Then, everyone seemed to be doing 9mm front/10mm rear. Now, MTBs are running 15mm thru-axle fronts, and 12mm rears.... and there's evidence that high-end road bikes will follow suit. And for maybe the past 20 years, there have been BMX bikes with 14mm axles front/rear. If I even have a point with all of this, I'd say it's that the bike world's "standards" are anything but standardized. Google is your friend, as are forums like this one. We can keep folks from buying incompatible parts, if only they ask!

Your assessment was spot on ... crazy that you can tell all of that just off of a few pictures and a ton of experience .

That was definitely an oversight on my part, though ... the fork had 100mm spacing, which was new for me (all the bikes I've built so far (all of them being older bikes, of course) have had 90mm spacing). I've never had an issue with axle diameter on 90mm forks, so it never crossed my mind that it might be an issue now. Sometimes you got to learn the hard way, I guess . That said, I'm just gonna go ahead and lace this hub up .

 

[Bicycle808]

Awesome. Have fun with the bike. I got a Heavy-Duti on the way from Chuckz out in Texas; can't wiat to build it up (I'm using an aftermarket fork, though....)

 

[SILVERKINGPC]

Snug axle bolts are your insurance policy...check them every ride.