D-Boys K98 questions

Pros: It's shaped like a K98. Cons: It's complete rubbish. Put the money aside and get a Tanaka

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cant justify the price for Tanaka as its only gonna be used now and again

Heh... well this one is so bad it can't be used...

The Dboys internals are the worst past of the gun. That's not the stuff you want to keep

Some of the more technically minded have swapped the internals out for a VSR-10 or similar.

Have a look for the K98 springer thread(s) - Boshman is the best at these conversions

As a garden plinker it's fine, it's not for taking to an event. As a source of cheap bits for a springer conversion is it's main use .

Don`t believe the doom and gloom merchants, the Dboys can be sorted for very little dosh. I have one and I love it now it`s sorted. It does require a good level of gunsmithing skill and access to a lathe but that`s it.
What needs to be done ............
1. Replace the crappy two-piece inner barrel with a normal aeg barrel of 450-500mm length. You will need a lathe to machine a new hop section in the new barrel to match the one you are replacing. I used a used Fammas inner barrel I had lying around.
2. remove the original piston head ( if it`s the spring version) by sawing it off.
Drill and tap piston for a 4mm screw and fit a piston head from a T.M. MP7 (18mm diam. ) , or make your own.Fit same to piston.
3.You will need to alter the original hop rubber by shaping the nub into a `h` nub shape. ( this makes a vast difference to accuracy and range).
4.You may need to dremel the underside of the action rails where the bolt runs, to prevent the first shell jammlng on loading.
That`s about it really.
Mine now shoots at 350 fps with .25s has very good range and accuracy, shells feed and extract perfectly.
Shells need to be in perfect condition to be consistent and accurate. I havea few shells I bought second hand and they are so badly knocked about they feed/extract poorly and do not shoot consistently.

Pete.

ive got the real wood version and really only bought it as a wall hanger,(wood stripped and oiled and metalwork weathered), as cheaper than a deac.
mine actually fires okay at short ranges doing on average 320fps with a .20 bb.
the reason for the two piece barrel is because they have matched barrel length to cylinder volume, otherwise the piston will have stopped moving with the bb only halfway down the barrel causing a massive reduction in fps.
the origional piston head is the biggest problem generating a really poor airseal and the mp7 mod mentioned above sounds very interesting as i have a mp7 gearbox knocking around.

Thanks for the advice so far, have had a good read through the K98 thread, some interesting stuff on there.

Peter,
thanks for the advice on what to do to the d-boys k98, problem being Im not really that technical minded with stuff like this, never worked on a springer rifle before, havent got access to a lathe, might ask the mrs to get me a dremel for xmas
although Im pretty good now with AEG gear boxes, upgrades etc

At the minute I was just going to use the K98 for one or two outings next summer as part of my SS/Heer load out, was just going to strip and re-stain the stock so it doesnt look like its been tango'd!

Soooo, it might be worth still getting one and maybe next winter dropping in the BAR-10 internals?

cheers
Rob

Screwdriver is absolutely correct regarding the inner barrel length being matched to the swept volume of the cylinder/piston area. The stock piston head is so undersize it`s a joke.
Fitting a piston head with a good fit gives more compressed air to launch the bb.
My inner barrel is 475mm so it`s about 1.5 short of the muzzle of the outer barrel. The original inner is only 250mm long.The problem then being that Dboys extended the 6mm inner with another 250mm barrel of 7mm diameter, the result of that is as soon as the bb leaves the 6mm part of the barrel it bounces off the sides of the 7mm section before exiting into the air outside,result massive inaccuracy.

pp

Wouldn't it not be correct to separate the issues of correct function/accuracy of shot from skirmishability?

For sure the duffness of manufacture (well, it is cheap) can be corrected as flatrajectory relates, but the thing is pretty much hopeless when using it in battle. I've only ever seen one person have a go and that was for the thrill of have authentic-ish ejecting cartridges. IIRC he never hit anyone nor came close to it!

Wouldn't it not be correct to separate the issues of correct function/accuracy of shot from skirmishability?

For sure the duffness of manufacture (well, it is cheap) can be corrected as flatrajectory relates, but the thing is pretty much hopeless when using it in battle. I've only ever seen one person have a go and that was for the thrill of have authentic-ish ejecting cartridges. IIRC he never hit anyone nor came close to it!

mmmmmmm might be worth asking someone for a quote for a ready built/upgraded K98 then?

not got a lot left to chose from for axis

Don`t believe the doom and gloom merchants, the Dboys can be sorted for very little dosh. I have one and I love it now it`s sorted. It does require a good level of gunsmithing skill and access to a lathe but that`s it.
What needs to be done ............
1. Replace the crappy two-piece inner barrel with a normal aeg barrel of 450-500mm length. You will need a lathe to machine a new hop section in the new barrel to match the one you are replacing. I used a used Fammas inner barrel I had lying around.
2. remove the original piston head ( if it`s the spring version) by sawing it off.
Drill and tap piston for a 4mm screw and fit a piston head from a T.M. MP7 (18mm diam. ) , or make your own.Fit same to piston.
3.You will need to alter the original hop rubber by shaping the nub into a `h` nub shape. ( this makes a vast difference to accuracy and range).
4.You may need to dremel the underside of the action rails where the bolt runs, to prevent the first shell jammlng on loading.
That`s about it really.
Mine now shoots at 350 fps with .25s has very good range and accuracy, shells feed and extract perfectly.
Shells need to be in perfect condition to be consistent and accurate. I havea few shells I bought second hand and they are so badly knocked about they feed/extract poorly and do not shoot consistently.

Pete.

Interesting post there Pete . Might have a go and see how much of a difference it makes . Cheaper than the Bar 10 conversion but still stuck with picking up shells

i bagged two people at op husky with mine, bearing in mind i probably fired about 150 shots that weekend.

its skirmishable up to 10 metres maybe

pros, it loads like the real deal
cons, its just too poor to use effectively

Ah, my bad! So you DID hit someone then! Probably "wait 'til you see the whites of their eyes" and "make every shot count" and "expect to die a lot" are good mottos...

cheers

Think Im gonna order one

The main problems of the dboys Kar98K (and of the original Marushin) are leaks and upgradability.

Even if you change the two piece barrel with tighbore, AEG or VSR barrel, and even if you change the piston head with someting with a better seal, you still have two leaks: the two ends of the shell. In reality, the Dboys and Marushin K98 shell ejectors actually have 3 barrels, including the shell. You can improve on the barrel and piston head, but the shells are difficult to get perfect.

Next is upgradability. It's hard enough to push the bolt closed with the stock spring, imagine putting in a tougher one? If you want added power, i suggest getting the gas version instead. It will still be leaky, but at least you can have more power. Maybe by using a more powerful gas, you can compensate for the loss due to leaks.

IMHO, the best thing to do with a stock Dboys or Marushin K98K is to admire it's beauty and it's gimmicky shell ejecting, but not to expect it to perform at par with what your enemies are packing. But if you want it to perform well, drop a VSR/bar10 into it and then you'll have as awesome, reliable, consistent, skirmishable, and powerful Bar98K.

could I still drop a vsr/bar 10 internals into the gas version??

also where do you put the gas into? any links on this would be great

The gas version is exactly the same as the spring version except for the bolt. In the gas version, the gas is loaded into the bolt itself. Shells are interchangeable. I think the bolts are interchangeable as well. So, you can still drop a VSR into a Dboy K98 Gas version.